Single speed governor
It only works at a specified speed, and is generally used in diesel engines with constant speed conditions (such as engine blocks). The purpose of using a single-speed governor on the starter is to prevent the starter from rotating over and causing the starter to overspeed and damage in order to prevent the main gear from starting.
The single-speed governor consists of main parts such as governor shaft, flying ball, sliding sleeve, speed control lever and speed regulating spring. When the governor is assembled and debugged, the speed-regulating spring has a certain pre-tightening force, which determines the maximum speed required by the starter.
When the starting machine speed is lower than the maximum speed, the effective centrifugal force of the flying ball is less than the elastic force of the speed regulating spring, and the governor does not work at this time. When the speed of the starter reaches and exceeds the maximum speed, the effective centrifugal force of the flying ball is greater than the elastic force of the speed regulating spring, the speed regulating spring is compressed, the sliding sleeve moves to the right, and the speed adjusting lever is driven to rotate with the lower end hinge as a fulcrum. Reduce the amount of combustible mixture entering the cylinder until the intake is completely stopped. Therefore, the starter becomes the load of the main unit, forcing the speed of the main unit to drop, and the starter is protected from damage. The preload of the speed control spring is adjusted with the adjusting screw. After the governor is commissioned on a dedicated test rig, the adjustment screw must be sealed.